Where is the so-called "life gate" in Chinese medicine?

In my opinion, Chinese medicine does not refer to an exact organ when it talks about zang-fu organs and life gates. For example, Chinese medicine says that spleen is important, while western medicine laughs at the fact that people who have their spleen removed can live for a long time, so Chinese medicine is wrong. In fact, this statement is the biggest joke, because Chinese medicine has never simply described the spleen as an organ, but the whole temper, that is, the whole spleen system (if that stupid medicine is used, Chinese medicine refers to the endocrine system, circulatory system and digestive system). By analogy, the vital gate of TCM refers not to an organ, but to a system. Many experts think that Mingmen refers to the kidney, or between the two kidneys, or somewhere, but I think this is wrong. The situation of Mingmen may be manifested by kidney qi, but it is not simply kidney qi, but the qi of five internal organs. And some puzzling experts have tried their best to study where Mingmen is and what organs it refers to, and even proved it with anatomical theory, but I think it is poisoned by western medicine, which makes people laugh and cry. Therefore, the six veins of traditional Chinese medicine, liver, heart, spleen, lung and kidney, have detailed explanations, but Mingmen does not, because Mingmen is not as tangible as other five internal organs, but it is invisible, not specifically referring to the viscera system, so it cannot be explained at all.